illustration with grey background and purple and black drawings

Build for Office 365

Enhance your experience

When you develop new add-ons for Office 365, you’re not only building your business—you’re also helping more than one billion Office 365 users be more productive.

Office 365 APIs

Connect to files, calendars, mail, and more when you integrate Office 365 APIs into your web apps.

Office add-ins

Make Office even more powerful with web apps for tools such as Excel, Outlook, PowerPoint, and more.

SharePoint add-ins

Develop web apps that extend the functionality of SharePoint and solve business problems.

Migrate to the cloud

Discover why developing for Office 365 is just one part of building a sound cloud strategy.

Purple illustration of a laptop

Get access to software

Secure licenses for software and online services, including Office 365, when you join the Microsoft Partner Network.

Technical Services

You don’t have to go it alone. Microsoft experts are available to help answer questions about development, migration, and selling your IP.

Dev Chat

Get quick guidance from an actual engineer. Simply fill in a quick form (so we can connect you with the right person) and start your chat.

Build intelligently

Access technical training and personalized consultations to help you develop and deploy your app.

Sell your apps

Register as an app developer and submit your apps to appear in the Office Store.

Blue illustration of zoomed in lines and products

See what’s next

Check out the Microsoft FastTrack roadmap to learn more about products rolling out to developers soon.

Blue illustration of zoomed in lines and products

Training and developer resources

Ready to develop for Office 365? Get the training you need to start building apps today, with help from our developer community.

Illustration of two chat bubbles

Office Dev Center

Connect to conferences, training, and blog posts for Office 365, Office 365 client, and SharePoint developers.

Light blue illustration of a computer

Office Developer Program

Build applications extending Office and the Office 365 experience across desktop, web, and mobile platforms.